Pressure evolution of electrical transport in the 3D topological insulator (Bi,Sb)2(Te,Se)3
ORAL
Abstract
The group V-VI compounds---like Bi$_{2}$Se$_{3}$, Sb$_{2}$Te$_{3}$, or Bi$_{2}$Te$_{3}$---have been widely studied in recent years for their bulk topological properties. The high-Z members of this series form with the same crystal structure, and are therefore amenable to isostructural substitution studies. It is possible to tune the Bi-Sb and Te-Se ratios such that the material exhibits insulating behavior, thus providing an excellent platform for understanding how a topological insulator evolves with applied pressure. We report our observations of the pressure-dependent electrical transport and compare that behavior with other binary V-VI compounds under pressure.
*Lawrence Livermore National Laboratory is operated by Lawrence Livermore National Security, LLC, for the U.S. Department of Energy, National Nuclear Security Administration under Contract DE-AC52-07NA27344.
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